%0 Journal Article
%T Comportamiento diferencial de la tensi¨®n arterial de pacientes con s¨ªncope neuro-cardiog¨¦nico en la fase inicial de la prueba de inclinaci¨®n
%A Asensio Lafuente
%A Enrique
%A Col¨ªn Ram¨ªrez
%A Eloisa
%A Castillo Mart¨ªnez
%A Lilia
%A Oseguera Mogue
%A Jorge
%A Narv¨¢ez David
%A Rene
%A Dorantes Garc¨ªa
%A Joel
%A Galindo Uribe
%A Jaime
%A Orea Tejeda
%A Arturo
%J Archivos de cardiolog¨ªa de M¨¦xico
%D 2006
%I Scientific Electronic Library Online
%X neurocardiogenic syncope (ncs) is diagnosed by means of a head-up tilt table tests (hutt). this is a prolonged test although early outcome predictors are known. methods: we conducted a study among patients engaged in a syncope study protocol. we performed hutt in all of them and compared the basal arterial pressure with the arterial pressure at the end of a the 70¡ã tilting. results: we performed 185 hutt studies. systolic blood pressure (bp) raised 0.9% among patients with a negative test, whereas patients with a positive hutt showed a 2.3% decrease (p = 0.2) in the same measurement. diastolic bp increased 34% among negative hutt patients and 14.9% among patients with positive test (p = 0.02). we calculated a relative risk of 1.45 for positive test when the combination of systolic bd decrease and dyastolic increase was present, according to the percentage of change (ic95%: 1.1 to 7.8). conclusions: the combination of systolic bp reduction and diastolic bp elevation at the end of the 70¡ã tilting is associated with an increased risk of having a positive hutt. these changes might be related to differential sympathetic stimulation.
%K neurocardiogenic syncope
%K blood pressure
%K predictors
%K physiopathology
%K dysautonomia
%K sympathetic stimulation.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1405-99402006000100008&lng=en&nrm=iso&tlng=en